Showerhead rail



FIG. 1 is a front, left side and top perspective view of a showerhead rail showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top end elevational view thereof; and,

FIG. 7 is a bottom end elevational view thereof. 

The ornamental design for a showerhead rail, as shown and described. 